EP1905447A2 - Verwendung eines zytokins der interleukin-6-familie für die herstellung einer verbindung zur kombinierten verabereichung mit interferon-alpha - Google Patents

Verwendung eines zytokins der interleukin-6-familie für die herstellung einer verbindung zur kombinierten verabereichung mit interferon-alpha Download PDF

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EP1905447A2
EP1905447A2 EP06794028A EP06794028A EP1905447A2 EP 1905447 A2 EP1905447 A2 EP 1905447A2 EP 06794028 A EP06794028 A EP 06794028A EP 06794028 A EP06794028 A EP 06794028A EP 1905447 A2 EP1905447 A2 EP 1905447A2
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cytokine
family
cardiotrophin
pharmaceutical composition
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EP1905447A4 (de
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R. Fundacion Para La Investigacion Aldabe Arregui
E Fundacion Para La Investigacion Larrea Leoz
M. Fundacion Para La Investigacion Civeira Murillo
J Fundacion Para La Investigacion Prieto Valtuena
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Proyecto de Biomedicina CIMA SL
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    • A—HUMAN NECESSITIES
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    • A61K38/00—Medicinal preparations containing peptides
    • A61K38/16—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • A61K38/17—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • A61K38/19—Cytokines; Lymphokines; Interferons
    • A—HUMAN NECESSITIES
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    • A61K38/00—Medicinal preparations containing peptides
    • A61K38/16—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • A61K38/17—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • A61K38/19—Cytokines; Lymphokines; Interferons
    • A61K38/20—Interleukins [IL]
    • A61K38/204—IL-6
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    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00—Medicinal preparations containing peptides
    • A61K38/16—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • A61K38/17—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • A61K38/19—Cytokines; Lymphokines; Interferons
    • A61K38/20—Interleukins [IL]
    • A61K38/2073—IL-11
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    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
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    • A61K38/16—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • A61K38/17—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • A61K38/19—Cytokines; Lymphokines; Interferons
    • A61K38/21—Interferons [IFN]
    • A61K38/212—IFN-alpha
    • A—HUMAN NECESSITIES
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    • A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
    • A61P1/16—Drugs for disorders of the alimentary tract or the digestive system for liver or gallbladder disorders, e.g. hepatoprotective agents, cholagogues, litholytics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A—HUMAN NECESSITIES
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    • A61P17/00—Drugs for dermatological disorders
    • A—HUMAN NECESSITIES
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    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A—HUMAN NECESSITIES
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    • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/12—Antivirals
    • A—HUMAN NECESSITIES
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    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/12—Antivirals
    • A61P31/14—Antivirals for RNA viruses
    • A61P31/18—Antivirals for RNA viruses for HIV
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/12—Antivirals
    • A61P31/20—Antivirals for DNA viruses
    • A61P31/22—Antivirals for DNA viruses for herpes viruses
    • A—HUMAN NECESSITIES
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/52—Cytokines; Lymphokines; Interferons
    • C07K14/54—Interleukins [IL]
    • C07K14/5412—IL-6
    • C—CHEMISTRY; METALLURGY
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    • C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/52—Cytokines; Lymphokines; Interferons
    • C07K14/54—Interleukins [IL]
    • C07K14/5415—Leukaemia inhibitory factor [LIF]
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/52—Cytokines; Lymphokines; Interferons
    • C07K14/54—Interleukins [IL]
    • C07K14/5431—IL-11
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/52—Cytokines; Lymphokines; Interferons
    • C07K14/555—Interferons [IFN]
    • C07K14/56—IFN-alpha
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00—Medicinal preparations containing peptides

Definitions

  • the present invention relates to the use of a cytokine in combination with an interferon for the preparation of compositions designed for the treatment of viral diseases.
  • the interferon (IFN) system is the first line of defense against viral diseases in mammals.
  • Type I interferons (which include several IFN- ⁇ and IFN- ⁇ subtypes) are molecules with antiviral activity, which are induced in mammal cells in response to viral infections.
  • the action of IFN- ⁇ is mediated by interaction with a surface cellular receptor multi-subunit, which consists of two receptor subunits, IFN- ⁇ receptor 1 (IFNAR1) and IFNAR2. Only one IFNAR1 chain form has been identified; and three variants of the IFNAR2 subunit have been recognised: one that is full-length, IFRNAR2c, and two truncated isoforms, IFNAR2b and IFNAR2a.
  • the IFNAR2c variant is involved in binding with ligands and the transduction of signals, whilst the two truncated forms, IFNAR2b and IFNAR2a -which do not have intracellular domains-, inhibit the IFN- ⁇ signal, through competition with IFNAR2c for binding with IFN- ⁇ .
  • the IFN- ⁇ signalling cascade is initiated when IFN- ⁇ binds with the receptor.
  • the binding of IFN- ⁇ with the receptor leads to the activation of tyrosine-kinases associated with IFNAR (Janus kinase 1 (Jak1) and tyrosine-kinase 2 (Tyk2)), which phosphorylate both subunits, IFNAR1 and IFNAR2.
  • Phosphorylated IFNAR1 provides a binding-point for the signal transduction and activator of transcription 2 (STAT2), which contains a homology-2 domain with Src, when phosphorylated by Tyk2 or Jak1.
  • the other STATs including STAT1, STAT3 and STAT5, are consequently recruited to the receptor for phosphorylation and activation.
  • the activated monomers STAT1 and STAT2 are then once again released to the cytosol, where they form heterodimers and bind with the interferon regulatory factor 9/Protein p48, to form an active transcription factor complex known as interferon-stimulated gene factor 3 (ISGF3).
  • ISGF3 interferon-stimulated gene factor 3
  • the complex is translocated to the nucleus and binds with the IFN stimulation response element (ISRE) in order to initiate the transcription of target genes, including some antiviral and immunoregulatory proteins.
  • ISRE IFN stimulation response element
  • IFN- ⁇ also induces the formation of other STAT complexes, including STAT1/STAT1, STAT1/STAT3 and STAT3/STAT3, which bind with the activated ⁇ sequence in the promoter regions of sensitive genes.
  • IFN- ⁇ activates STAT1, STAT2, STAT3 and STAT5, followed by the induction of a wide variety of antiviral and proapoptotic genes which may contribute to IFN- ⁇ 's anti-tumour and antiviral activity in the human liver.
  • HBV hepatitis B
  • HCV hepatitis C
  • the response to interferon- ⁇ by the cell infected with the virus is dependent on several determining factors, including those related to the virus and those specific ones related to the host.
  • Various HCV gene products have been shown to modulate the host's response to IFN therapy and affect the severity of the viral disease, particularly in the case of hepatic disease.
  • HCV non-structural (NS5A) and structural (E2) proteins interact with PKR, one of the key molecules involved in the development of an antiviral state in response to IFN [3, 4]. This could block PKR, leading to inhibition of the IFN activity in HCV-infected cells.
  • S5A non-structural
  • E2 structural proteins interact with PKR, one of the key molecules involved in the development of an antiviral state in response to IFN [3, 4]. This could block PKR, leading to inhibition of the IFN activity in HCV-infected cells.
  • STAT1 signal induced by IFN- ⁇ is affected both in transgenic mice with HCV and in liver biops
  • STAT1 activation in these cells is not affected when they were incubated with the pro-inflammatory molecule IFN- ⁇ , which susggests that the blocking of STAT1 activation produced by HCV is specific for the type 1 IFN signalling cascade, and does not affect the type II IFN signalling pathway.
  • cytokines which activate the Jak-STAT signalling pathway particularly members of the IL-6 family, which comprises IL-6, IL-11, leukemia-inhibiting factor (LIF), oncostatin (OSM), cardiotrophin-1 (CT-1), ciliary neurotrophic factor (CNTF) and cardiotrophin-like cytokine (CLC) [7].
  • LIF leukemia-inhibiting factor
  • OSM oncostatin
  • CT-1 cardiotrophin-1
  • CNTF ciliary neurotrophic factor
  • CLC cardiotrophin-like cytokine
  • cytokines potentially activate STAT3 and, to a lesser extent, STAT1 through a common gp130 receptor subunit.
  • IL-6 induces some antiviral effects [8]
  • this cytokine's antiviral activity is much lower than that of interferon- ⁇ .
  • the present invention relates to the use of an IL-6 family interleukin, preferably cardiotrophin-1 (CT-1) or oncostatin M (OSM):
  • CT-1 cardiotrophin-1
  • OSM oncostatin M
  • the present invention relates, in the first place, to the use of at least one IL-6 family cytokine -gp130 family-or a DNA sequence which codes for it, in the preparation of a pharmaceutical composition for combined administration with at least one IFN- ⁇ or a DNA sequence which codes for it, in the treatment of viral diseases, being said cytokine selected among cardiotrophin-1, IL-11, leukemia-inhibiting factor, oncostatin M, ciliary neurotrophic factor, cardiotrophin-like cytokine, and combinations thereof; and, even more preferably, said cytokine is cardiotrophin-1 or oncostatin M.
  • the "IL-6 family" cytokine for example, CT-1, relates to:
  • the IL-6 family cytokine (whether it is complete, an active fraction or a polypeptide derivative) may come from both the native form and any form of recombinant cytokine, starting from any polynucleotide form which codes for the complete cytokine, the active fraction or the polypeptide derivative.
  • the IFN- ⁇ of the invention is any type of IFN- ⁇ .
  • said IFN- ⁇ is selected from IFN- ⁇ -2a, IFN- ⁇ -2b, IFN- ⁇ -5, consensus interferon, purified IFN- ⁇ , pegylated IFN- ⁇ and combinations thereof.
  • the IFN- ⁇ is selected from pegylated IFN- ⁇ -2b, pegylated IFN- ⁇ -2a, pegylated IFN- ⁇ -5 and combinations thereof.
  • the combined use of an IFN- ⁇ and an IL-6 family cytokine is designed for the treatment of a preferably viral disease.
  • viral diseases which may be treated through the combined use of interferon and an IL-6 family cytokine, the following can be mentioned, amongst others: diseases caused by the encephalomyocarditis virus, hepatitis B and C, HIV, cutaneous viral infections (chicken-pox, herpes zoster, measles), respiratory viral infections, viral infections of the central nervous system, hepatic viral infections, viral infections of the salivary glands, infectious mononucleosis and genital warts.
  • the viral disease is hepatitis C.
  • the IL-6 family cytokine -or cytokines-and the IFN- ⁇ may be administered separately, being present in different pharmaceutical compositions; or they may be administered jointly, being present in the same pharmaceutical composition.
  • An additional object of the present invention is, therefore, a pharmaceutical composition which comprises a pharmaceutically acceptable quantity of at least one IL-6 family cytokine -gp130 family-, or a DNA sequence which codes for it, and a pharmaceutically acceptable quantity of at least one IFN- ⁇ , or a DNA sequence which codes for it.
  • the IL-6 family cytokine is preferably selected from IL-6, IL-11, leukemia-inhibiting factor, oncostatin M, cardiotrophin-1, ciliary neurotrophic factor, cardiotrophin-like cytokine and combinations thereof; and even more preferably, said IL-6 family cytokine is cardiotrophin-1 or oncostatin M.
  • the IFN- ⁇ is any type of IFN- ⁇ .
  • the IFN- ⁇ has been selected from IFN- ⁇ -2a, IFN- ⁇ -2b, IFN- ⁇ -5, consensus interferon, purified IFN- ⁇ , pegylated IFN- ⁇ and combinations thereof.
  • the IFN- ⁇ is selected from pegylated IFN- ⁇ -2b, pegylated IFN- ⁇ -2a, pegylated IFN- ⁇ -5 and combinations thereof.
  • the DNA sequence that codes for the IL-6-family cytokine (whether it is complete, an active fraction or a polypeptide derivative) or the IFN- ⁇ is incorporated into an expression vector, for example, a plasmid or viral vector, which is preferably operatively binded with a control sequence that regulates the expression of the cytokine or the IFN- ⁇ .
  • an expression vector for example, a plasmid or viral vector, which is preferably operatively binded with a control sequence that regulates the expression of the cytokine or the IFN- ⁇ .
  • the construction of said expression vector with the DNA sequence may be performed by conventional recombinant technology methods contained in handbooks such as, for example, " Molecular Cloning: A Laboratory Manual", by J. Sambrook, D.W. Russel Eds. 2001, 3rd ed. Cold Spring Harbor, New York .
  • These embodiments of the pharmaceutical composition are of interest for therapies which use gene transfer (gene therapy).
  • the pharmaceutical composition of the invention may further comprise at least one excipient that is pharmaceutically compatible with the IL-6-family cytokine, or with the DNA sequence that codes for it, and pharmaceutically compatible with the IFN- ⁇ or the DNA sequence that codes for it.
  • the IL-6-family cytokine -or the DNA sequence that codes for it-and the IFN- ⁇ -or the DNA sequence which codes for it- may be carried in respective carrier agents.
  • compositions of the invention include, without being limited thereto, any solid composition (for example, tablets, capsules, granules, etc.) or liquid composition (for example, solutions, suspensions, emulsions, etc.) for administration by any appropriate administration route, for example, oral, nasal, parenteral, topical, transdermal, rectal, etc.
  • said pharmaceutical composition may be in an oral administration pharmaceutical form, either solid or liquid.
  • oral administration pharmaceutical forms include tablets, capsules, granulates, solutions, suspensions, etc., and may contain the conventional excipients, such as bonding, diluent, disintegrating, lubricant, wetting, etc., excipients, and may be prepared by conventional methods.
  • the pharmaceutical composition may also be adapted for parenteral administration, in the form of, for example, sterile solutions, suspensions or lyophilised products, in the appropriate dosage form; in this case, said pharmaceutical composition shall include the adequate excipients, such as buffers, surfactant excipients, etc.
  • the excipients shall be selected on the basis of the selected administration pharmaceutical form.
  • a review of the different pharmaceutical forms for drug administration, for these and other potential alternative routes, and their preparation, may be found, for example, in the book “Tecnolog ⁇ a farmacéutica” ["Pharmaceutical Technology”], by J.L. Vila Jato, 1997 Vols. I and II, Ed. S ⁇ ntesis, Madrid ; or in " Handbook of Pharmaceutical Manufacturing Formulations", by S.K. Niazi, 2004 Vols. I to VI, CRC Press, Boca Rat on.
  • the pharmaceutical composition is designed for parenteral administration, preferably subcutaneous, intravenous, intramuscular or intraperitoneal.
  • the IFN- ⁇ is in pegylated form.
  • pegylated IFN- ⁇ -2b examples of pegylated IFN- ⁇ -2b
  • PEGASYS IFN- ⁇ -2a
  • both the IL-6-family cytokine and the IFN- ⁇ shall preferably be in a pharmaceutically acceptable or substantially pure form, i.e. they shall have a pharmaceutically acceptable purity level, excluding pharmaceutically acceptable excipients and not including material considered to be toxic at the normal dosage levels.
  • the purity levels for the IL-6 family cytokine and the IFN- ⁇ are preferably above 50%, more preferably, above 70% and more preferably, above 90%. In a preferred embodiment, they are above 95%.
  • the therapeutically effective quantity of the IL-6 family cytokine and the IFN- ⁇ to be administered shall be dependent, amongst other factors, on the individual who is to be treated, the severity of the disease suffered by said individual, the selected form of administration, etc.
  • the doses mentioned in the present invention shall be considered solely as guides for persons skilled in the art, and the latter shall adjust the doses on the basis of said variables.
  • the IL-6 family cytokine and the IFN- ⁇ may be administered one or more times a day, for example, 1, 2, 3 or 4 times a day.
  • the typical total daily quantity of cardiotrophin-1 shall be between 1 ⁇ g/kg and 10 mg/kg of body weight; and the typical total daily quantity of IFN- ⁇ -2a is between 1.5 and 10 MIU per day or between 40 and 300 micrograms per week of pegylated IFN- ⁇ .
  • the dosage level will be higher during the first weeks of treatment, with the dose being reduced in subsequent stages.
  • the administration scheme may be daily, three times per week, or also weekly.
  • the cardiotrophin-1 and the IFN- ⁇ may be administered following different administration schemes (for example, different administration route or different frequency).
  • An additional objective of the present invention is a pharmaceutical kit for the treatment of a viral disease which includes at least:
  • the kit according to the invention preferably comprises an IL-6 family cytokine selected from IL-6, IL-11, leukemia-inhibiting factor, oncostatin M, cardiotrophin-1, ciliary neurotrophic factor, cardiotrophin-like cytokine and combinations thereof, and, even more preferably, the IL-6 family cytokine is cardiotrophin-1 or oncostatin M.
  • the kit according to the invention comprises an IFN- ⁇ of any type, preferably one selected from IFN- ⁇ -2a, IFN- ⁇ -2b, IFN- ⁇ -5, consensus interferon, purified IFN- ⁇ , pegylated IFN- ⁇ and combinations thereof.
  • the IFN- ⁇ is selected from pegylated IFN- ⁇ -2b, pegylated IFN- ⁇ -2a, pegylated IFN- ⁇ -5 and combinations thereof.
  • the DNA sequence which codes for the IL-6 family cytokine (whether complete, an active fraction or a polypeptide derivative) or the IFN- ⁇ in the kit is incorporated into an expression vector.
  • the first component and the second component may comprise, in addition, at least one pharmaceutically acceptable excipient which is compatible with the IL-6 family cytokine -or a DNA sequence that codes for it-and with the IFN- ⁇ -or a DNA sequence that codes for it-.
  • the kit defined above may comprise the first and the second components in separate pharmaceutical compositions; or else the first and the second components may be present in the kit in the same pharmaceutical composition.
  • This kit may also comprise a third component, which comprises one or more excipients that are pharmaceutically compatible with the IL-6 family cytokine -or a DNA sequence that codes for it-and with the IFN- ⁇ -or a DNA sequence that codes for it-.
  • a third component which comprises one or more excipients that are pharmaceutically compatible with the IL-6 family cytokine -or a DNA sequence that codes for it-and with the IFN- ⁇ -or a DNA sequence that codes for it-.
  • Said third component may comprise, in addition, one or more carrier agents which are pharmaceutically compatible with the IL-6 family cytokine -or a DNA sequence that codes for it-and with the IFN- ⁇ -or a DNA sequence that codes for it-.
  • An additional object of the present invention is a method for the treatment of a viral disease which comprises administering in a combined manner a therapeutically effective quantity of at least one IL-6 family -gp130 family-cytokine (whether complete, an active fraction or a polypeptide derivative, as they have been previously defined), or a DNA sequence that codes for it, and a therapeutically effective quantity of at least one IFN- ⁇ , or a DNA sequence that codes for it.
  • the DNA sequence that codes for the IL-6 family cytokine or the IFN- ⁇ of the method is incorporated into an expression vector.
  • the viral disease may be produced by the encephalomyocarditis virus, hepatitis B and C, HIV, cutaneous viral infections (chicken-pox, herpes zoster, measles), respiratory viral infections, viral infections of the central nervous system, hepatic viral infections, viral infections of the salivary glands, infectious mononucleosis and genital warts.
  • the viral disease is hepatitis C.
  • the IL-6 family cytokine is preferably selected from IL-6, IL-11, leukemia-inhibiting factor, oncostatin M, cardiotrophin-1, ciliary neurotrophic factor, cardiotrophin-like cytokine and combinations thereof; even more preferably, the IL-6 family cytokine is cardiotrophin-1 or oncostatin M.
  • the IFN- ⁇ is any type of IFN- ⁇ . In a preferred embodiment, it is selected from IFN- ⁇ -2a, IFN- ⁇ -2b, IFN- ⁇ -5, consensus interferon, purified IFN- ⁇ , pegylated IFN- ⁇ and combinations thereof; in another additional preferred embodiment, the IFN- ⁇ is selected from pegylated IFN- ⁇ -2b, pegylated IFN- ⁇ -2a, pegylated IFN- ⁇ -5 and combinations thereof.
  • the latter may comprise the combined and simultaneous administration of the interleukin family cytokine, preferably cardiotrophin-1, and the IFN- ⁇ .
  • the IL-6 family cytokine (whether complete, an active fraction or a polypeptide derivative) and the IFN- ⁇ may be present in the same pharmaceutical composition which is administered to the patient; or else the IL-6 family cytokine and the IFN- ⁇ may be administered in separate pharmaceutical compositions.
  • the present invention shows that, when the hepatic cells which comprise a complete HCV replicon are stimulated with IFN- ⁇ and an IL-6 family interleukin, particularly cardiotrophin-1 or oncostatin M:
  • Huh7 cell lines carrying the full-length HCV replicon Huh7 cells were established which expressed the full-length HCV replicon as has been described [9].
  • pI 389 /Core-3'/5.1 were linearised with ScaI (New England Biolabs, USA) and were used as templates for RNA synthesis using T7 RNA polymerase (Promega, USA).
  • 20 ⁇ g of synthesised RNA were used to electrophore 10 7 Huh7 cells and, 24 hours later, 500 ⁇ g/ml of G418 (Gibco, USA) were added. Twice a week, the supplemented culture medium was replaced by G418 and, 4 weeks after transfection, the mixed colonies resistant to G418 were collected and used for subsequent analysis.
  • Huh7 cells which either expressed the full-length HCV replicon or not were seeded at 200,000/well in 6-well plates in D-MEM (Gibco) with 10% FCS (Gibco). 50 IU/ml of IFN- ⁇ -2 (Intron A, Schering-Plough), or 20 ng/ml of CT-1 (R&D Systems, UK), or a combination of IFN- ⁇ -2 (50 IU/ml) plus CT-1 (20 ng/ml) were added for different periods of time: 15 minutes, 1 hour and 2 hours.
  • the Huh7 cells were lysed in lysis buffer (60 mM Tris-HCl pH 6.8, 2% SDS, 2.5% glycerol, 0.7 M 2-mercaptoethanol and 0.02% bromophenol blue).
  • the samples were resolved in SDS-polyacrylamide gels (Bio-Rad Laboratories, CA) at 7.5% under reducing conditions.
  • electrophoresis they were transferred to nitrocellulose membranes (Bio-Rad Laboratories) and dyed with Ponceau red solution (Sigma-Aldrich, Germany), in order to verify that there was an equal load of proteins.
  • the membranes were incubated in TBS-T (50mM Tris-HCl (pH 7.6), 200mM NaCl and 0.1% Tween-20) with 5% dehydrated milk. The proteins were detected by incubation with the specific primary antibody in TBS-T for 1 hour. The membranes were subsequently washed in TBS-T and secondary antibody conjugated with peroxidase was added for 1 hour. The membranes were subject to extensive washing in TBS-T and the specific protein bands were viewed using the "Western Lightning Chemiluminescence Reagent Plus" chemiluminescence detection system (Perkin Elmer, USA), following the manufacturer's instructions. Subsequently, the membranes were autoradiographed and the bands were quantified by means of densitometric analysis performed by means of the Molecular Analyst/PC programme (Bio-Rad Laboratories).
  • the anti-phospho-STAT1 tyr701 and anti-phospho-STAT3 tyr705 antibodies and the anti-rabbit IgG antibody conjugated to HRP were purchased from Cell Signaling Technology (USA).
  • the anti-STAT3, anti-phospho-STAT1 ser727 , anti-STAT2 and anti-phospho-STAT2 tyr689 antibodies were obtained from Upstate Biotechnology (USA).
  • the anti-STAT1 antibody was from Santa Cruz Biotechnology (Santa Cruz, CA).
  • the anti-actin antibody was from Sigma-Aldrich (Germany).
  • ISGs 2' -5'OAS, STAT1 and STAT3 were studied on Huh7 cells carrying the HCV replicon after incubation for 72 hours with IFN- ⁇ -2 (5 or 50 IU/ml) or CT-1 (20 ng/ml), or OSM (20 ng/ml), or IFN- ⁇ -2 + OSM combined (see Figs. 2A-2F ).
  • CT-1 or OSM by itself were not able to increase or weakly the expression of these ISGs
  • the three ISGs analysed herein have significant antiviral effects, the increase in the expression of STAT3 by combining CT-1 or OSM and IFN- ⁇ -2 is particularly relevant, since this factor does not only have antiviral properties, but also exhibits a potent cytoprotection and anti-inflammatory activity.
  • RNA samples Two micrograms of total RNA were treated with DNAase (Gibco-BRL, UK) prior to reverse transcription with M-MLV Reverse Transcriptase (Gibco BRL) in the presence of RNaseOUT (Gibco-BRL).
  • the expression of the STATs, the 2 - SOAS and the ⁇ -actin was measured by means of real-time PCR using an Icycler and the IQ SYBR Green Supermix (Bio-Rad Laboratories, CA). 2- ⁇ l aliquots of the cDNA pool were used for each PCR, which contained specific forward and reverse direction primers for each gene (Table 1) in a final volume of 20 ⁇ l.
  • Huh7 cells carrying the HCV replicon were incubated with IFN- ⁇ (IFN- ⁇ -2 or IFN- ⁇ -5, at 5 or 50 IU/ml) plus or minus the IL-6 family cytokine (IL-6, CT-1, OSM; at 20 ng/ml); or with the IL-6 family cytokines by themselves.
  • IFN- ⁇ IFN- ⁇ -2 or IFN- ⁇ -5, at 5 or 50 IU/ml
  • IL-6, CT-1, OSM at 20 ng/ml
  • the quantity of HCV RNA was measured after 72 hours of culture ( Figs.
  • the combination therapy of IFN- ⁇ -2 or IFN- ⁇ -5 plus CT-1 or OSM increases the antiviral effect of IFN- ⁇ by an approx. factor of 5 and 10 respectively. Further, the combination therapy of IFN- ⁇ -2 or IFN- ⁇ -5 plus IL-6 enhances it in an approx. factor of 2.
  • Huh7 cells expressing the full-length HCV replicon were seeded at 100,000/well in 6-well plates in D-MEM with 10% FCS. 50 or 5 IU/ml of IFN- ⁇ -2 or IFN- ⁇ -5 by themselves, or in combination with 20 ng/ml of CT-1 or OSM or IL-6 were added. The cell culture was maintained for three days. The supplemented culture medium was replaced daily with said cytokines.
  • RNA of Huh7 cells transfected with the full-length HCV replicon was obtained following the "Ultraspec RNA Isolation System" protocol (Biotech, USA), which is based on the method described by Chomczynski and Sacchi [10].
  • Two micrograms of total RNA were treated with DNAase (Gibco-BRL) prior to reverse transcription with M-MLV Reverse Transcriptase (Gibco BRL) in the presence of RNaseOUT (Gibco-BRL).
  • the expression of the HCV RNA and the ⁇ -actin mRNA was measured by quantitative real-time PCR using an Icycler and the IQ SYBR Green Supermix (Bio-Rad Laboratiories).
  • Huh7 cells were incubated with decreasing doses of IFN- ⁇ -2, from 250 to 1 IU/ml, in the presence or absence of a low (5 ng/ml) or high (50 ng/ml) dose of CT-1 and were infected with EMCV 24 hours later.
  • a low or high dose had little cytoprotection effect on the EMCV-infected cells, since the addition of this cytokine at very low doses of IFN- ⁇ -2 did not improve cell viability.
  • CT-1 at both low and high doses, markedly increased the protection induced by IFN- ⁇ -2 against the cytopathic effect of EMCV. This synergy was observed upon using IFN- ⁇ -2 doses between 250 and 28 IU/ml, with the synergy being most pronounced at IFN- ⁇ -2 doses of 83 and 28 IU/ml.
  • Cytoprotection assay of IFN- ⁇ -2 and CT-1 against EMCV in Huh7 cells The cytoprotection activity of IFN- ⁇ -2 and CT-1 was determined by measuring these cytokines' capacity to protect Huh7 cells against the cytopathic effect of the encephalomyocarditis virus. The assay was performed on a 96-well microtitre plate. Firstly, 2x10 4 Huh7 cells per well were seeded in 150 ⁇ l of a medium containing serial dilutions of IFN- ⁇ -2 by itself (from 250 to 1 IU/ml) or these serial dilutions of IFN- ⁇ -2 plus 50 or 5 ng/ml of CT-1, and they were incubated for 24 hours.
  • Huh7 cells expressing the full-length HCV replicon were seeded at 20,000/well in 24-well plates in D-MEM with 10% FCS. Different experiments were performed; 50 or 5 IU/ml of IFN- ⁇ -2 or IFN- ⁇ -5 with or without 20 ng/ml of CT-1, OSM or IL-6 (R&D Systems, UK) were added. The cell culture was maintained for three days. The supplemented culture medium was replaced with said cytokines daily.
  • RNA of Huh7 cells transfected with the full-length HCV replicon was obtained using the Kit Nucleic Acid Purification Lysis Solution (Applied BioSystems, Foster City, CA) and the semi-automatic system ABI PRISM 6100 Nucleic Acid PrepStation (Applied BioSystems). Two micrograms of total RNA were treated with DNAase (Gibco-BRL) prior to reverse transcription with M-MLV Reverse Transcriptase (Gibco BRL) in the presence of RNaseOUT (Gibco-BRL).
  • the expression of the HCV RNA and the ⁇ -actin mRNA was measured by quantitative real-time PCR using an Icycler and the IQ SYBR Green Supermix (Bio-Rad Laboratiories). 2- ⁇ l aliquots of the cDNA pool were used for each PCR, which contained specific forward and reverse direction primers for the 5 non-translated region of the HCV or the ⁇ -actin gene (Table 1) in a final volume of 20 ⁇ l. In order to determine the specificity of the PCR products, their dissociation temperature was analysed. The results were normalised on the basis of the quantification of ⁇ -actin in the same sample. The quantity of HCV RNA was expressed through the formula 2 ct(actin)-ct(HCV) , being ct the point at which the fluorescence significantly increases above the background fluorescence.

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WO2010009762A1 (en) * 2008-07-23 2010-01-28 United Technologies Ut Ag Interferon and an agent inducing inhibition of protein phosphatase 2a such as interleukin- 1 and optionally ribavirin for the treatment of hbv or hcv infection
WO2010040882A1 (es) 2008-10-07 2010-04-15 Proyecto De Biomedicina Cima, S.L. Oncostatina m como potenciador de la actividad inmunoestimuladora de células epiteliales humanas
WO2011098644A3 (es) * 2010-02-09 2015-09-03 Proyecto De Biomedicina Cima, S.L. Composiciones para el tratamiento de enfermedades infecciosas y tumorales, que comprenden un agonista de osmr y un interferón de tipo iii

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JP2010059081A (ja) * 2008-09-02 2010-03-18 Okayama Univ オンコスタチンｍを含有する抗ｈｃｖ剤およびその利用
CN109562107A (zh) 2016-05-10 2019-04-02 C4医药公司 用于靶蛋白降解的杂环降解决定子体
EP3454862A4 (de) 2016-05-10 2020-02-12 C4 Therapeutics, Inc. Spirocyclische degronimere für zielproteinabbau
CN109641874A (zh) 2016-05-10 2019-04-16 C4医药公司 用于靶蛋白降解的c3-碳连接的戊二酰亚胺降解决定子体
KR20190133216A (ko) 2017-03-31 2019-12-02 아카니스 바이오테크 에프운트에 게엠베하 운트 콤파니 카게 비흑색종 피부암(nmsc)의 예방 및 치료
CN113197910B (zh) * 2021-05-14 2022-09-23 苏州大学 一种基于阿司匹林及其代谢产物提高干扰素抗病毒活性的抗病毒药盒

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WO2010009762A1 (en) * 2008-07-23 2010-01-28 United Technologies Ut Ag Interferon and an agent inducing inhibition of protein phosphatase 2a such as interleukin- 1 and optionally ribavirin for the treatment of hbv or hcv infection
WO2010040882A1 (es) 2008-10-07 2010-04-15 Proyecto De Biomedicina Cima, S.L. Oncostatina m como potenciador de la actividad inmunoestimuladora de células epiteliales humanas
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